Brush.



J. P. BOWDITGH.'

BRUSH. APPLICATION FILED JUNE 17, 1910.

986,679. Patented Mar. 14, 1911.

. J 3W: Jinx 5201;2 1:167

JOHN F. IBOWDITCI-I, 015 BOSTON, MASSACHUSETTS.

BRUSH.

Specification of Letters Patent.

Patented Mar. 14, 1911.

Application filed June 17, 1910. Serial No. 567,356.

To all whom it may concern:

Be it known that I, JOHN F. BOWDITOI-I, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Brushes, of which the following is a specification.

This invention relates chiefly to a rotary brush or brush cylinder composed of a carrier formed as a rotary drum and a plurality of rows or series of brush filaments such as bristles projecting radially from the perimeter of the drum.

The invention has for its chief object to enable a carrier to be provided with brush filaments at relatively small expense and in such manner that when the filaments have been rendered useless by wear, fresh filaments may be quickly and economically substituted for them.

The invention is embodied in a brush strip composed of a layer of bristles clamped together centrally and having two acting portions each composed of a series of brush filaments and projecting in different directions from the central portion of the layer, each series of filaments being adapted to use interchangeably with the other, so that when one series is worn the other may be substituted for it by the simple operation of removing the brush strip from the carrier and engaging it therewith in a diiferent position.

The invention is also embodied in a carrier having means for holding a brush strip of the character described with one series of brush filaments in its operative relation to the carrier, and the other series stored in operatively.

Of the accompanying drawings which form a part of this specificationFigure 1 represents an end view of a rotary brush embodying my invention. Fig. 2 represents a perspective view of a portion of the brush. Fig. 3 represents a section on line 33 of Fig. 2. Fig. 4 represents an end View of one of the brush strips, the same being shown partly in section. Fig. 5 represents in perspective portions of the brush strip shown by Fig. 4 separated from each other. Fig. 6 represents a perspective View of one of the angular members attached to the perimeter of the drum. Fig. 7 represents a side view of a portion of a brush strip constituting a modification of my invention. Fig. 8 rep resents a section on line '88 of Fig. 7.

Fig. 9 represents a View corresponding to Fig. 3 and showing a portion of a modified form of carrier adapted to the modified form of brush strip shown by Figs. 7 and 8.

Similar reference characters indicate the same or similar parts in all the figures.

In the embodiment of my invention here shown for purposes of illustration, 12 represents the perimeter and 13 the ends or heads of a drum of substantially cylindrical form, the drum being mounted to rotate on a suitable axis. As shown in Fig. 1, the drum is provided with a shaft 14 which is journaled in suitable bearings.

' Referring for the present to Figs. 1 to 6 inclusive, the carrier isprovided with a series of sockets extending lengthwise of its perimeter and formed by a series of sheet metal members of substantially the form represented by Fig. 6, each member being a metal strip of angular form in cross section having at one edge a flange 15 which is riveted or otherwise rigidly secured to the perimeter of the drum, a radial inner portion 16 which forms one wall of a socket, a radial outer portion 17 which forms another wall of a socket, and an intermediate portion 18 which connects the portions 16 and 17 and forms the outer side of a storage chamber 19, the inner side of which is formed by the perimeter of the drum. When the said members are assembled on the drum as represented by Figs. 1, 2 and 3 the radial portion 16 of one member and the radial portion 17 of the next member form the sides of a socket extending lengthwise of the drum. The outer radial portion 17 is separated from the perimeter of the drum by a space 20 (Fig. 3) which connects the socket, formed by two adjacent members, with the storage chamber 19 formed by one of said members.

Each of the sockets formed as described is adapted to receive an elongated brush strip which, in'the embodiment of the in vention now under consideration, is composed of two clamping members 21 and 22 preferably of sheet metal, and a layer of bristles interposed between said members and clamped centrally thereby, the length of the bristles being considerably greater than the width of the clamping members 21 and 22, so that the end portions of the bristles project in difierentdirections from the clamping members and constitute two series of brush filaments 23 and 24. Before asselnbling the parts, the bristles are preferably connected by two; strips of flexible penetrable material such as cloth or stout paper placed on opposite sides of the layer :and secured thereto and to each other-by suitable' means such as stitches 26 spassed; through the strips 22 and the intermediate portionsof the layers of brist1es,'as clearly shown by Fig. 5. The strips 26 are prefer- 10 z'ablyfconnectedafithe nds ofiftheflayerQ'of' bifiStle s byi; "necks I extending across the fefnds'o'jf the layer.

The clamping whites "21 {aha-'22; hie'tf "angiilaif f orniflso ,thataNhen-"thy are "pressed together against opposite s ides' of the layer bristlesithej bend the intoj'a corresponding a gi 1ar 0rh1,-sas shown by Fig; 4, brush strip being: thns produced which" is angnlar 'in 'cross -section The members 21 wim e d.b xs n 'a as" rivets 28,2;as shown by Fig. 4..

" The lam-ping members21and 22fand .the rivets28 connecting the'same, .constiti1te "abindefyvhi'ch isbf suitably rigid and sub.- fstaiitial constriicti'onh The form of the described brush strip is ,snclf that" the bin'derfis I heaped whe inserted "byan ehdwise moveme'nt in one of 'the 'socketsi above described,

"filaments 1 ectsj radially"- 'from' the drinn or barrier, the other; series at the same time W projecting into "one "of the storage chambers 19, One series of filaihhtsis" therefore held ioperatively "arranged filaments have been fthe socket in' an foperativeposition, f the otherbeing stored-inoperative'lyl the rendered ilselessjby Wear, the other seriesfof filaments may snb stitnted for fit byj'with- 'drawin'g ,7 the brush strip from 1 they-socket taii d refinserting it 'so; that the series-which lviias' ibeitore *stored {in i? the "chamber {is aused to project from he carrier.

' Theedgesf of the clampi' ember 22am *drfsrrmm thelbrushfilaments so that spaces 4) ;a r eformed, each Spacebeing adapted, to 5 receive f one of the outer radial portions 17 said portions [1 7 b'eing "thns in;

t'erlocked with the brush. strip and caused to revent 'out'vvfardf displacement of the saine.

".- Figs. 7 7, 8 and 9*sh0w a" modification 5 in which the brush strip is fiat in cross section instead ofbeing'angnlar. 1h thismod ificatib'n flat1amp1 g merhbers 21 and 22% are applied to the central portions of 'the layer i ii'illach strip-holding socket in this inodification of, the invention "is composed of two {flanges '30, projecting finivardly from the perimeter -12-ofthe 'drnm." 'f Said flanges are provided tvith bosses 31 formed to" engage the heads of therivets "28 and thiis 1I1t f-,

lofc'k the brus strip with the carrier w pre- "vent outwarddisplacement of the brush strip. --The inoperative filaments are stored in the interior of t l1e-d-ru1n, one of the heads 13 of the drum being provided With open- "in'gs 32 (Fig. 9) adapted to permit the in- --sertion and removal of the inoperative filainentsu- .v

Either oftheabove described forms of brush stripwvith two acting portions, as 23 'and '24, or 23 and 24 is adapted to be manufactured at a costfs'liglitly' exceeding that of -b'r1'1'shstrip having but one acting portion,

the ih'crea sedexpensebeing due olily-to the increased lengthof the brist1es, and the cost etherivis'e being no greater than would ,beinvalved: inana'liin'g a brush strip with only-one acting portion. 1 am therefore, enabled to practically donblethe du}iability of the brush Without correspondingl adding to 'it's cost. \Vhile' lfhave shown and' described my' in- -"vention=jembodied"oifly the rotary brush; it

is obviouslthat b'rn'slr strip having two; a'ctmg portions, and a carrier "having means for '--l 1old1ng the? 'str pwi'th one (it 1ts act1ng portions imam operative-position and the other M stored ineperjatively; may be made in'various elongated socket and" 'a 's'tora'ge chamber commnnicatingtherewith;and an e1ongatedbmsh 's'tr ip adapted-to "be d'etach'a'bly' held in said socket? aha-having two ifiterchang'eableflactso'cket in an operative position, and theother in an inoperative positi n vv'ithin 'said' chamber. i 2; --A brush c'o nprisinga' carrierhaving a lurality of "elengated soekets,and a inrality of elongated brush strips, each adaptfed'to' be detachably heldin one of said'sockets,"- and each jhaving'ftwo interchangeable actingportions one of {which is heldin an operative" p'o'sltlonf 111' the corresponding "socket, the carrier having means for storing the other acting portions in tn-inoperative position.

I "3. FA bru'shcomprising: a carrier having opposed flang s sep'aratedfby' "an intermedi'ate' space andiormihg an elongated socket, a storage ehamberjcommunicating with the socket, and an elongated brush strip adapted to be inoved i 'endwise" into and ut of "the Y socket} and having twoj'a'cting -portions one "ofvvhich proj ects operatively from the socket Wh'iljef the other projects into 1 said chamber,

the fsaid brash strip andflanges having inter- "locking-members which prevent outward displace'lnent' 'of the bruslrstripl 4. 1A brush 'comprising' a brush strip composed of: an"elongated' binderand: tWo' series *tjf'brhsh filaments each projecting from the binder in adifl'erent' direction from the other, and a carrier having an elongated socket in which said binder is detachably mounted, and a storage chamber adjacent to the socket and adapted to contain one series of brush filaments in an inoperative position, the other series projecting operatively from the socket.

5. A brush comprising an elongated binder, a layer of bristles confined centrally by the binder, the end portions of the bristles projecting from the binder and forming two series of brush filaments each projecting in a different direction from the other, the binder and the layer of bristles being angular in cross section, and a carrier having an elongated socket in which said binder is detachably mounted, and a storage chamber adapted to receive one series of filaments, the other series projecting operatively from. the socket.

6. A brush comprising a plurality of brush strips each composed of a binder and a layer of bristles confined centrally by the binder, the end portions of the bristles projecting from the binder and forming two series of brush filaments each projecting in a difi'erent direction from the other, the binder and the layer of bristles being angular in cross section, and a carrier formed as a drum having a plurality of angular members attached to its perimeter, each member being attached at one edge to the drum, and having a radial inner portion adjacent to its attached edge and forming a socket wall, a radial outer portion forming another socket Wall which is separated from the perimeter of the drum, and an intermediate portion connecting said inner and outer portions and forming the outer side of astorage chamber,

Copies of this patent may be obtained for five cents each, by addressing the the said socket walls being arranged in pairs and adapted to detachably engage said binders and hold the brush strips as described, one series of filaments of each strip projecting operatively from the drum, and the other series being stored inoperatively in the corresponding chamber.

7. A brush comprising a series of brush strips each having two acting portions projecting in different directions, and standing substantially at right angles with each other, and a cylindrical carrier having means on its perimeter for detachably engaging the strips and holding one of the acting portions of each strip in an operative position and radiating from the carrier, and the other in an inoperative position, and lying upon the perimeter of the carrier, the said acting portions being interchangeable.

8. As anarticle of manufacture, a brush strip composed of two narrow elongated clamping members which are angular in cross section, and means for connecting the same, said members and connecting means constituting an angular binder, and a layer of bristles extending crosswise of the binder and clamped centrally between the said mem bers, the end portions of the bristles projecting in different directions from the binder and forming two series of brush filaments standing substantially at right angles with each other and adapted to be used interchangeably.

In testimony whereof I have atfixed my signature, in presence of two witnesses.

' JOHN F. BOWDITCH.

Witnesses:

C. F. Brown, P. W. PEzzE'r'rI.

Commissioner of Patents,

Washington, D. C. 

